Hydraulic swivel.



packing-box cap. j

MED

` CLYDE S. WRIGHT, OF TOLEDO, OHIO, ASSISI-NOR TO THE NATIONAL SUPPLY COMPANY, l

OFFICE.

0F TOLEDO, OHIO, A CORPORATIGN OF OHIO.

HYDRAULIC SWIVEL.

Specification of Letters Patent.

Patented @(5513, 1914.

To all whom it may concern:

Be it known that I, CLYDE S. WRIGHT, a citizen of the United States, residing at Toledo, in the county of Lucas and State of Ohio, have inventednew and useful Improvements in Hydraulic Swivels, of which the following is a specification.

My invention relates to hydraulic swivels and its objects are to provide hydraulic swivels with packin boxes which may be separately tightened without loosening or removing parts of the swivel, and which may be tightened while the swivel is in use.

Another object is to provide for the removal of the hose stem after removing the A further object isv to prevent the lower packing-box gland from dropping down the drill pipe.

Other 'objects are to prevent sand and -water from havirighccess to any of the working parts of the swivel in case it leaks.

Referring tothe accompanying drawing, Figure 1 is a vertical section of a hydraulic swivel embodying the principlesof my invention, and Fig. 2, an elevation of the upper portion thereof.

On the drawings, 1 represents the trun nion-block having the trunnio- 2` to which the ends 3 of the usual bail or clevis are connected.'

The swivel stem l extends vertically through the trunnion-block and has the bearing ring, collar, or flange 5 extending outwardly from the swivel-stem and into the enlarged recess or opening 6 in the trunparts. The trunnion-block is provided with the cap 13 screwed into the upper end of the recess 6, thebottom of the cap lying close to the upper face of the bearing ring or ange 5 and receives the swivel stem above the' lange 5. The hose-stem 14 eX- tends through the swivel stem 4 and is somewhat smaller in diameter than the latter and has the outwardly extending' stuiiingbox collar 15 in the vicinity of the bearing ring 5 and the stuiiing-box collar 16 near its lower end.

17 is packing seated on the collar l5 and bet-ween the'hose-stem and the swivel stem. This packing is compressed by the gland 18, on which there rests the race 19 for the balls 20. The bearing ring'21 rests on the balls and is carried in a recess in the bottom of-the externally threaded ring 22. IThe hose stem has thereon the nut or collar 23 screwed down en the ring the collar being provided with the set-screws 24 which engage the hose-stem and prevent the collar from turning. t i

25 is the packing-box cap which rests on the collar 23 and is in threaded engagement with the ring 22 vand the upper end of the trunnion-block cap 13. The packing-box -cap is preferably divided into lateral halves which are connected together by the bolts 26. The intermediate portions'of the halves are removed v(Fig. 2) in order that a bar may be inserted in the holes `27 in the ring 22 for rotating the latter.

The goose-neck 28 is screwed Von the upper A end of the hose-stem and bears on the .top of the packing-box cap 25. The coupling 29 is screwed on the outside of the lower end of the swivel stem i and is provided with the internal shoulder 30 which serves as a seat for the gland 31 for compressing the packing 32 between itself and the collar 16, and between the liwer' ends of the hosestem and swivel-stem. 2,9

33 are a series of portholes in the swivelstem to permit the escape dit' any water and sand which may pass the packing 32.

-From the construction described it isseen that. the gland 31 cannot @triep down into the drill-pipe 34 on the low r., end of the coupling 29; that water andfand which pass the packing` will ordinarll pass out through the port-holes 33 that`,`\ii\lany water and sand should rise above th `port-holes, they could not obtain access to\`tlie conebearings by reason of the packint lt.; that I either packing can be separatelybtigliftened while the swivel is rotating by rotating the' theV cap 25 or by separating its halves, the

between the two stems, a gland beneath the packing, and means rotatable on the swivel s tem for supporting the gland and adjustlng the same.

2. In a hydraulic swivel, a trunnion-block,

aswivel-stem supported within the same, a hose-stem within the swivel-stem, packing between the two stems, a gland beneath the packing, means for supporting the lower end of the gland, and means for causing the gland to adjust the is rotating.

3. In a hydraulic swivel, a trunnion-block, a swivel-stem supported within the same, a

packing while the swivel hose-stem within the swivel-stem, packing between the two stems, a gland beneath the packing, nieans for supporting the lower end of the gland, and ineans rotatable with'respect to the swivel-stem for causing the gland to adjust the packing.

4. In a hydraulic swivel, a trunnion-block, a swivel-stem therein, a hose-stem in the swivel-stem, separate packings between' the two stems, and means for separately compressing the packings without removing or loosening the said parts of theswivel.

5. In a hydraulic swivel, a trunnion-block, a swivel-ste1n therein, a, hose-stem in the swivel-stem, and a packing between the two stems, there being port-holes in the swivelstem above the packing for the escape of material passing the packing.

portions of the stems, a gland on the packing, and' a cap connected to the trunnionblock and transmitting pressure tothe gland,

the cap being composed of lateral sections and means for securing them together.

8. In a hydraulic swivel, a trunnion-block, a swivel-stem therein, a4 hose-stem in the swivel-stem, a packing collar on lthe hosestem, packing on the collar, a gland for the packing, and a cap removably connected to thetrunm'on block and bearing on the gland, whereby the hose-stem vis freely removable when the cap has been disconnected from the trnnion-block. A

9. In a hydraulicswivel, a trunnion-block,

`a swivel-stem therein, a hose-stem Ain the swivel-stem, a coupling on the lower end of the swivel-stern, a packing gland seated on a shoulder in the coupling, and means for causing the gland to compress the packing.

Signed at Toledo, Ohio, this 24 day of July, A. D. 1913.

CLYDE s. WRIGHT.

i Witnesses:

R. F. HILL, M. N..TABEP 

